ACR ELT 1000 handleiding
Handleiding
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ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ELT 1000 (P/N: A3-06-2749-1)
Y1-03-0259 Rev. AC Company Confidential 25-62-33 Page 17 of 65
DESCRIPTION AND OPERATION
1. Description
A. Functional Overview
1) The ELT automatically activates during a crash and transmits a continuous standard sweep tone on the
121.5 frequency. The first digitally encoded 406 MHz burst will start transmitting. Approximately every 50
seconds thereafter, the 406 MHz transmitter turns on and transmits an encoded signal of either 440ms or
520ms, depending on the beacon programming protocol. This message is received by the COSPAS-SARSAT
Search and Rescue (SAR) satellite system.
2) The information contained in the message includes:
a) Beacon serial number, or
b) Aircraft identification or registration number
c) Country of registration and country code
d) Position coordinates, if beacon is programmed to receive position data from the aircraft navigation
system
3) When the 406 MHz signal is detected by the Cospas–Sarsat satellite LEO (Low Earth Orbit system), a
position is calculated and the 121.5 MHz signal is used to home in on the crash site.
4) The 406 MHz transmitter will operate in this mode for 24 hours and then shut down automatically. The
121.5 MHz transmitter (homer transmitter) will continue to operate until the batteries are exhausted, which
is at least 50 hours.
5) The location accuracy of the 406 MHz transmitter is typically 3 km. If position information is extracted from
the aircraft navigation system, the accuracy improves to approximately 100 meters. The ELT 1000 is able to
accept position information from RS-232 (A/B Protocol).
6) The 406 MHz digital message provides search and rescue authorities the information to contact the
owner/operator of the aircraft through information contained in a database. The database may include:
a) Type of aircraft and aircraft registration number
b) Owner address and telephone number
c) Alternate emergency contact
7) Previous to February 9, 2009, the COSPAS-SARSAT system used the 121.5 MHz signal as an aid to
determine beacon location. As of this date, the use of this signal for satellite location has been terminated,
as the accuracy proved too poor. 406 MHz capable ELTs replace the older Class B beacons.
8) Aircraft communications transceivers are not capable of receiving 406 MHz transmissions; therefore, the
only methods of monitoring the ELT are:
a) The blinking cockpit remote switch LED
b) The buzzer
c) 121.5 MHz transmissions, which can be monitored using the aircraft communications transceiver or an
AM radio tuned to 121.5 MHz
Bekijk gratis de handleiding van ACR ELT 1000, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | ACR |
| Model | ELT 1000 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 9637 MB |
